平南三桥岩溶发育特征及影响因素研究

Study on Karst Development Characteristics and Influencing Factors of Pingnan Third Bridge

文章以平南三桥桥位区施工图详细勘察地质钻探、工程物探资料为基础,结合南岸拱座基坑开挖验证调查,分析桥位区岩溶发育特征,探讨影响岩溶发育的因素,发现桥位区岩溶发育主要受地层岩性、地质构造及水文地质因素影响,具有明显的方向性。

Based on the detailed geological drilling survey and engineering geophysical data in the construction drawings of Pingnan Third Bridge site,and combining the verification investigation of foundation pit excavation in South Bank abutment,this article analyzes the karst development characteristics of bridge site area,and discusses the factors affecting the karst development,and it is found that the karst development in bridge site area is mainly affected by stratum lithology,geological structure and hydrogeological factors,which has obvious directionality.